Update spotless version.

Author: brendandburns

pom.xml

@@ -301,10 +301,18 @@
       <plugin>
         <groupId>com.diffplug.spotless</groupId>
         <artifactId>spotless-maven-plugin</artifactId>
-        <version>1.31.3</version>
+        <version>2.0.1</version>
         <configuration>
           <formats>
             <format>
+              <includes>
+                <include>examples/**/*.java</include>
+                <include>extended/**/*.java</include>
+                <include>kubernetes/**/*.java</include>
+                <include>proto/**/*.java</include>
+                <include>spring/**/*.java</include>
+                <include>util/**/*.java</include>
+              </includes>
               <trimTrailingWhitespace />
               <endWithNewline />
             </format>